A very scary dream.
What is nightmare?

A brutal or vicious person.
"Nobody was really surprised when it happened, not really, not at the subconscious level where savage things grow."

What is Savage?
Violent act against someone or something. From the legends of the Chupacabra
What is attack?
Autumn
Time of the year that Halloween is celebrated.
Any event that is beyond the understanding of science.
What is Paranormal?

A partial or total loss of memory.
"During the last two years he has operated successfully under many identities. The amnesia that denies him all knowledge of his life before that."

What is Amnesia?
Placed under a spell; bewitched. From the Jinn of the UAE
What is Enchanted?
An imaginary evil spirit; used to frighten children.

What is the Bogeyman?
A ritual when you try to get rid of an evil spirit from a person or place.
What is Exorcist?

The condition of being weak and delicate.
"He was tall, looking very much as he did in those volumes of notable demons that the magicians had pored over in recent months and weeks, vainly looking for some hint of frailty in the creature"

What is Frailty?
A large place underground; typically for burying the dead. From the rumor of the Sydney Harbor Bridge.
What is a Tomb?
Another word for costume.
When someone wants to change the way they look.
What is a Disguise?
Difficult or impossible to understand.

What is mysterious?
The ability to understand something without needing a clear reason.
"First she glanced at the clock on the night table and saw it was quarter past two in the morning. Charlie shouldn’t even be here; he should be on shift. Then she got her first good look at him and something leaped up inside her, some deadly intuition."

What is Intuition?
Ready to attack; behaving in a forceful way. From the Legend of the Yeti of the Himalayas.
What is Aggressive?
Strange and frightening.

What is Eerie?
To create or maintain a state of extreme fear.

What is terrorize?
Knowledge and stories, usually traditional, about a subject.
"Once upon a midnight dreary, while I pondered, weak and weary,
Over many a quaint and curious volume of forgotten lore—
While I nodded, nearly napping, suddenly there came a tapping,
As of some one gently rapping, rapping at my chamber door."

What is Lore?
The color of your skin when it loses all color. From Beijing's ghost bus story.

What is Pale?
Causing intense disgust, disgusting.
What is Revolting?